This statement is not only true in football but in taking care of ourselves during the cold and flu season. 
Most of us have heard about the "swine flu" pandemic that the CDC is advertising will potentially sweep the globe this year. The CDC is advertising the dangers of this influenza strain almost daily in the news. 
Many of my clients have asked what they can do to prevent and protect themselves from getting this flu. Let's start with a good offense -
1. building up your immune system to be at its peak so that if you come in contact with someone who is contagious with the "swine flu" or other undesirable bacterias or viruses, your body can fight it off.  One great way to do this is by taking IMMUNOBERRY LIQUID. Strong immune support in a pleasant tasting liquid…

Research suggests that certain herbs, mushrooms and other natural  compounds have  potential  antiviral  and  antibacterial ability, as well as the ability to stimulate natural killer (NK) cell activity,  cytokine synthesis  and  the  T-cell  and  B-cell  mediated responses necessary for a strong immune defense. Research on compounds found in nature, and in ImmunoBerry™ Liquid, show improvement in an array of conditions such as influenza, respiratory tract infections, sinusitis, viral hepatitis,and various bacterial infections.

ImmunoBerry™ Liquid contains: Certified organic extractsof Astragalus (Astragalus membranaceus), Wild Cherry Bark (Prunusserotina), Shiitake mushroom (Lentinula edodes), Maitake mushroom(Grifola frondosa), Elderberry (Sambucus nigra), plus Beta 1,3 Glucan.

ImmunoBerry™ Liquid is sweetened with glycerin and tastes great, and is ideal for both children and adults. 
 
It may  improve immune response and provide additional defense against colds and influenzas.